Mechanical movement and windshield-cleaning apparatus involving the same



Sept. 69 1927;

5. LIPPERT MECHANICAL MOVEMENT AND WINDSHIELD CLEANING APPARATUS INVOLVING THE SAME Filed June 2 Sheets-Sheet 1 Sept, a, 1927 1,641,392

s. LIPPERT MECHANICAL MOVEMENT AND WINDSHIELD CLEANING APPARATUS INVOLVING THE SAME Filed June 7. 1924 2 sheets-sheet 2 y 4 *l' g a 20 VL'QIII QE'I BQ +ETIIJIIL JP!- Q I I Z/n e/Mar W? W j) um, M M

Patented Sept. -6, 1927.

PATENT OFFICE.

SAMUEL LIJPPEBT, 015 GARFIELD IZEIGHTS, OHIO, ASSIqNOR TO THE OUTLOOK MANU- FACTURING COMPANY, OF CLEVELAND, OHIO, A CORPORATION OF OHIO.

MECHANICAL MOVEMENT ,AN D WINDSHIELD-GLEANING APPARATUS INVOLVING THE SAME.

Application filed June 7,

This invention relates to a novel mechanmovement for converting as rotary motion into a uniform oscillatory or reciprocatory motionthat is to say, one which is of substantially constant speed from end to end of the ran e of movement; which is thoroughly reliable; which is positive in its action; is easy and comparatively quiet-of operation; and which is simple in its em bodiment; is substantial, and very durable.

The foregoing objects, with others hereinafter appearing, are attained in the em.

bodiment .of the invention illustrated in the accompanying drawings wherein Fig. 1 is "a fragmentary rear elevation of a windshield of a motor vehicle "having applied thereto windshield cleaning apparatus incorporating the invention; 'Figs. 2 and 3 are, respectively, a plan view and a right hand side elevation of what is shown in Fig. 1; Fig. 4' is a sectional plan of the motor and transmission mechanism on a scale: considerably enlarged over that of the preceding views; Fig. 5 is a section substantially on the line 55 of Fig. 4; Fig. 6 is a transverse section on the line 6-6 of Fig. 4; Fig. 7 is a section on the corre spondingly numbered line of Fig. 4; Fig. 8 is a sectional detail through the driving mechanism the lane of section being indicated by the ine 8'-8 of Fig.- 4; and Figs. 9, 10 and 11 are diagrams illustrating the action of the driving element.

Describing the present embodiment of the invention by the use of reference characters, 1 refers generally to a housing that is made up of a front wall 2, rear wall 3 and side walls 4 and 5. Journaled within suitable .bushings 6 that are fitted within apertures of the walls 2 and 3 is a shaft 7. Rotary members 8 and 9, shown as bevel gears, are loosely 'ournaled upon the shaft 7 adjacent the we. s 2 and 3, respectively;

1924. Serial No. 718,457.

and secured to the shaft 7, between the members 8 and 9, is a head .10, the same being shown as fastened to the shaft by means of a screw 11 (see Figs. 4 and 6). Meshing with the bevel gears which constitute the rotary members 8 and 9 is a bevel pinion 12 that is supported by, and freely rotatable upon, a stub shaft 13 that is fastened by a screw 14 within aboss of the end wall 4. 'Keyed or otherwise secured to the hub of the bevel pinion 12 is a worm wheel 16. 1 Secured to therear wall 3 of the housing 1 is the frame 17 of an electric motor, designated generally by the numeral 18. This motor may be of any approved type, preferably one as compact and light as is practical when used in the present embodiment.

The armature of the motor is designated 19 and the shaft 20 thereof is journaled at its forward end in a boss 21 that extends forwardly from the motorframe 17 and fits within a bracket 22 formed integral with the rear wall 3 of the housing. A set screw 24 secures the boss 21 within the bracket. This may constitute the only means of fastening the motor frame to the housing, but the frame is properly positioned with respect to the housin extends forwardly rom the motor frame and enters a recess in the housing, the dowel by a dowel 25 that being located on the side of the motor frame opposite that from which the boss 21 projects. The motor is supplied with current through the usual lead wires (not shown) and may be controlled by a suitable switch. To the forward end of the armature shaft 20, is secured a worm 28 which meshes with the worm wheel '16.

J ournaled upon a stud 30 extending from the free end of the head 10 is a driving element 31, said element being held upon the stud by a screw 32. The driving element is shown as substantially triangular although it may assume other shapes so long as it possesses an odd number of driving parts or points spaced substantially equal distances a art\circumferentially of the eleinent an between which parts are bearing portions. The respective rotary members 8 and 9 have recesses 33 and 34 that are spaced from the axis of the shaft 7 av distance substantially equal to the distance between the driving e1ement31/and the axis i of the shaft. As, shall be more fully explained hereinafter, the driving element is adapted to have driving connection with first one and then the other of the members 8 and 9 and While it has driving connection with one, it slides upon an annular bearing portion of the other.

Secured to the rear end of the shaft 7 is an arm 35 which is arranged to engage Fill dll)

adjustable stops that are provided by screws .v 36 that are screwed through lugs 37 on the .rear wall 3 of the housing.

When the motor is running, the rotary members 8 and 9 are rotated simultaneously and in opposite directions by reason of their driving connection with the motor through the bevel pinion 12, worm wheel 16 and worm 28. 1

Referring now more particularly to Figs8 to 11, when one point of the driving element 31 is within the recess 34: of the rotary member 9, the head 10 will, be caused to travel with said member 9 while the diametrically opposed bearing portion of the driving element in the meantime traverses the annular bearing portion of the other rotary member I 8. Thus the rotary motion of the member 9 is transmitted to the shaft 7 through the driving element 31 and the head 10. The head continues to travel'in the direction of the member '9 until the shaft is stopped by the engagement of the arm 35 with the right hand stop 36 (as the parts are viewed in Fig. 7). Upon the stoppage of the shaft (at which time the recess 33 of the rotary member 8 is approaching transverse alignment with the recess 34 of the member '9) the driving element will start to rotate in the direction indicated by the arrow associated with it in T i 10. This action will continue until the driving element assumes the position shown in Fig. 11, when the driving element and head will be picked up by the member 8 and carried with it in the direction shown by the arrow associated with the element in Fig. 11, or in other words, in the reverse direction to that above described. This reverse movement continues until the arm 35 strikes the left hand stop 36 and until the recesses of the members 8 and 9 approach transverse alignment. on the opposite side of the shaft.

The housing 1 is adapted to be secured to the frame 40 of a windshield 4:1 by means of screws 42 that are extended through apertures in the frame and are screwed into menses Having thus described my invention, what T claim is i 1. Tn a mechanical movement, the combination of opposed members supported for r otation upon a common axls, means for rotat- 7 rotation upon a common axis and having annular bearing portions concentric with said axis and which are interrupted by recesses, a head betweensaid members supported for oscillation upon substantially the same axis, a driving element carried by the head, said element having circumferentially spaced parts arranged to enter the recesses of said members and having portions intermediate said parts that are adapted-to traverse the bearing portions of said members, and means for rotating said members simultaneously and in opposite directions.

'3. Tn a mechanical movement, the combination of opposed members supported for rotation upon a common axis and having annular bearing portions concentric with said axis and which are interrupted by recesses, a head between said members supported for oscillation upon substantially the same axis,

a driving element carried by the head, said element having circumferentially spaced parts arranged to-enter the recessesof said members and having portions intermediate said parts that are adapted to traverse the bearing portions of said members, means for arresting movement of the head when the recesses of the respective members are sub- :tantially opposite each other, and means for rotating said members simultaneously and in opposite directions.

4. Tn a mechanical movement, the combination of a shaft, opposed members loosely mounted upon the shaft, said members having annular bearing portions concentric with the shaft and whlch are interrupted by recesses, a head secured to the shaft between'said members, a driving element rotatably carried by the head, said element having circumferentially spaced parts arrangedto enter the recesses of said members and having portions intermediate said parts that are adapted to traverse the bearing portions' of said members, and means for rotating said members simultaneously and in opposite directions. a

3. In a mechanical movement, the combitill nation of a shaft, opposed members loosely mounted upon theshaft, said members havin annular bearing portions concentric with the shaft and which are interrupted by recesses, a head secured to the shaft between said members, a driving element rotatably carried by the head, said element having circumferentially spaced parts arranged to,

enter the recesses of said members and having portions intermediate said parts that are adapted to traverse the bearing portions of said members, stop mechanism for limiting the oscillatory movement of the shaft, and means for rotating said members'simultaneously and in opposite directions. I

6. In a mechanical movement, the combination of a shaft, gears loosely mounted upon and spaced apart longitudinally of the shaft, the gears having flat annular portions concentrl with the shaft, and which are interru ted by recesses, a head secured to the shat between said gears, a driving element pivotally supported by the head and having circumferentially spaced parts arranged to enter the recesses of said gears and havin portions intermediate said parts that are a apted to traverse said flat annu-- lar portions of the gears, and means for rotating the gears simultaneously and in opposite directions. In a mechanical movement, the combination of ashaft, bevel gears loosely mounted upon and spaced apart longitud nally of the shaft, said gears I eing'arranged face to face, a head secured to the shaft getween said gears, the gears having annular earm and w ich are interrupted, by recesses, a

, driving element rotata driving said pinion.

ly carried by the head and having circumferentially spaced parts arranged to enter the recesses of the gears and havin portions intermediate said arts that are a a ted to traverse the bear ortions of t e ears, a bevel pinion meshlng with the beve gears, and means for 8. In a mechanical movement, the combination of a shaft, bevel gears loosely mounted upon and s seed a art longitudinally of the shaft, said gears ing arran ed face to face, a head secured to the shaftietween said gears, the gears having annular bearin and w ich are interru ted by recesses, a

driving element rotata ly carried by the head and having circumferentially spaced parts arranged to enter the reeesses of the gears and having portions intermediate said portions concentric with the shaft portions concentric with the shaft parts that are adapted to traverse the hearing portions of t e gears, a bevel pinion meshing with the bevel gears, means for driving said pinion, an arm secured to the shaft, and stops'wherewith the arm en ages to limit the oscillatory movement 0 shaft.

9. In a mechanical movement, the combination of opposed members supported for rotation upon a common axis and having annular bearing portions concentric with said axis and 'WlllCll are interrupted by recesses, means for rotating said members simultaneously and in opposite directions, a head between said members supported for oscillation upon substantially the same axis, and a driving element carried by the head and rotatable u 'on an axis at substantially right angles to t e former axis, the driving element having an odd number of parts which are adapted to enter alternately the recesses of the respective opposed members for directing drlving connection between first the one*and then the other'of said members and angles to t e former axis, the driving element havin an odd numberof parts which are adapte to enter alternately the recesses of the respective opposed members for effecting driving connection between first one. and then the other of-said members and the head, the element having a'flat bearin portion diametrically o posite each 0 the aforesaid parts for sliding engagement with the annular bearing, portlon of one member while said element has driving connection with the other member, and stop mechanism Bugging I the oscillatory movement of the signature.

/ SAMUEL LIPPEBT.

the head, the element having a fiat bearing ,portion diametricall 'OPPOSltG each of the aforesaid parts for s iding engagement with ers supported for oscillation upon substantially the same axis,-

a driving element carried by the head and. rotatable u on an axis at substantially right In testimony whereof, Ihereunto aflix my 

